Choose the most appropriate answer for each.
-trisomy
A)3n; generally sterile
B)a chromosome segment is permanently transferred to a nonhomologous chromosome
C)(2n - 1); a zygote deprived of a chromosome
D)a repeat of a particular DNA sequence in the same chromosome or in nonhomologous ones
E)(2n + 1); three chromosomes of the same kind are present in a set of chromosomes
F)a piece of the chromosome is inadvertently left out during the repair process
G)a chromosome segment that has been cut out and rejoined at the same place, but backward

Question

Quizplus · Accepted Answer

Trisomy is a condition where an individual has three chromosomes of the same kind instead of the usual two. It is indicated by the formula (2n + 1), where n is the number of chromosomes in a normal cell set.

Answer: C
 Trisomy is a condition where an individual has one extra chromosome, and the formula is (2n + 1). In the case of monosomy, one chromosome is missing, and the formula is (2n - 1).

Answer: A
 Trisomy is a condition where an individual has three chromosomes of the same kind instead of the usual two. It is generally sterile, meaning the individual is unable to reproduce.

Note: The other answer choices do not accurately describe trisomy.

Choose the Most Appropriate Answer for Each